gtk:assistant-page-complete (assistant page)

assistant -- a gtk:assistant widget
page -- a gtk:widget page of assistant
complete -- a boolean with the completeness status of the page

The gtk:assistant-page-complete function gets whether the page is complete. The (setf gtk:assistant-page-complete) function sets whether the page contents are complete. This will make the assistant update the buttons state to be able to continue the task. The gtk:assistant implementation is deprecated since 4.10. This widget will be removed in GTK 5.